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Finding the Fourth Proportional to 292,207.20, 438,483.60 and 192,655.20

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Solution

The fourth proportional to 292,207.20, 438,483.60 and 192,655.20 is: 289,096.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,207.20 : 438,483.60 = 192,655.20 : x
  2. Step 2: Convert to fraction form
    292,207.20/438,483.60 = 192,655.20/x
  3. Step 3: Cross multiply
    292,207.20x = 438,483.60 × 192,655.20
  4. Step 4: Simplify right side
    292,207.20x = 84,476,145,654.72
  5. Step 5: Solve for x
    x = 84,476,145,654.72/292,207.20
  6. Step 6: Final answer
    x = 289,096.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.